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S43940 Stainless Steel vs. SAE-AISI 1086 Steel

Both S43940 stainless steel and SAE-AISI 1086 steel are iron alloys. They have 81% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S43940 stainless steel and the bottom bar is SAE-AISI 1086 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
220 to 260
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 21
11
Fatigue Strength, MPa 180
300 to 360
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
72
Shear Strength, MPa 310
450 to 520
Tensile Strength: Ultimate (UTS), MPa 490
760 to 870
Tensile Strength: Yield (Proof), MPa 280
480 to 580

Thermal Properties

Latent Heat of Fusion, J/g 280
240
Maximum Temperature: Mechanical, °C 890
400
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
50
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 12
1.8
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.6
1.4
Embodied Energy, MJ/kg 38
19
Embodied Water, L/kg 120
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86
79 to 84
Resilience: Unit (Modulus of Resilience), kJ/m3 200
610 to 890
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
27 to 31
Strength to Weight: Bending, points 18
24 to 26
Thermal Diffusivity, mm2/s 6.8
14
Thermal Shock Resistance, points 18
26 to 30

Alloy Composition

Carbon (C), % 0 to 0.030
0.8 to 0.93
Chromium (Cr), % 17.5 to 18.5
0
Iron (Fe), % 78.2 to 82.1
98.5 to 98.9
Manganese (Mn), % 0 to 1.0
0.3 to 0.5
Niobium (Nb), % 0.3 to 0.6
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0 to 0.050
Titanium (Ti), % 0.1 to 0.6
0